These all can lead to climate change which is why they are used to muddy the waters, but anthropogenic climate change places another layer onto other natural climate changing events. There has also been recent reports (if I have time later I will see if I can find them again) about the effect of fluctuations in the sun on worlds climate. Some scientists believe that we are about to enter a natural sun influenced warming period (600 years of natural warming cycle)…which will only be added to by anthropogenic effects.
This I believe I raised somewhere earlier. One needs to read a broad range of information from a broad range of sources as there are positive and negative effects of climate change. One can easily read only a few which support ones own beliefs to draw and argue ones own opinions.
This is where the IPCC work has merits. They review all available information and they assess the likelihood of the effects of climate change. The more an aspect has consistent scientific reporting, the more likely the affects will be similar to the consistent outcomes.